Improvement in apparatus for cleaning boiler-tubes



w. s., von Essen. Apparatus fnrfG-Ieaning Boiler-Tubes.

N0 l 55,l27 Patented Sept.15,1874.

Wlmsse THE GRAPHIC C0.FHOT0 LITH.358\4| PARK PLABE,N.Y.

UNITED STATES PATENT OFFICE.

WILHELM S. VON ESSEN, OF HAMBURG, GERMANY.

IMPROVEMENT IN APPARATUS FOR CLEANING BOILER'TUBES.

Specification forming part of Letters Patent No. 155,127, dated September 15, 1874 application filed August 11, 1874.

To all whom it may concern:

Be it known that I, WILHELM S. VON EssEN, of Hamburg, in the Empire of Germany, have invented an Improved Apparatus for Cleaning Boiler-Tubes, of which the following is a specification:

This invention relates to the cleaning of tiretubes of tubular boilers by blowing steam through them; and the invention generally consists in a combination, with the smoke-box and fire-tubes of the boiler, of one or more perforated steam blow-pipes in jointed tubular connection with the steam-space of the boiler, and arranged within the smoke-box, also adjustable, without opening the smoke-box to cool the tubes or admit a reverse draft into or out of line with the tire-tubes, accordingly as it is required to clean the tubes, or to place them out of exposure to the direct action of the re or hot gaseous lproducts of combustion passing through the tubes.

While numerous changes of construction may be made to suit different kinds or forms of tubular boiler, including attached devices for automatically shutting` oi the steam from the blow pipe or pipes when the same are thrown out of line with the re-tubes, it will sufce to describe the invention underone form or modication as applied to a marin e-engine boiler, and in which the steam through the blow pipe or pipes is separately turned on or ott' by hand.

Figure l is a broken end view of a marineengine boiler having my invention applied; Fig. 2, a partly vertical longitudinal section of the same, and Fig. 3 a plan thereof.

A A is the body of the boiler; B B, main fire tubes or chambers; and C C, return retubes, arranged in lines one above the other, and in communication at their one end with the smoke-box D, which is in direct connection with the chimney E. Within the smokebox D are one or more steam blow-pipes, G, extending across the smokebox outside the smoke-box ends of the lire-tubes C C. Such blow pipe or pipes G have their perforations b on their inside faces next to the ends of the tiretubes C C, and are suitably bent and connected with a frame of movable or sliding pipes, G G', and a flexible or jointed steam-pipe attachment, H H', which connects with a steam-pipe, I, of the boiler, having a cock, d. This movable frame of pipes is adjustable up or down outside of the smoke-box D, and without opening the doors or lids f of the latter, by means of a chain-and-pulley lift, J, controlled by a perforated stop device, K, to adjust the blowpipes G into or out of line with the lire-tubes C C, accordingly as it is required to blow steam through the latter for the purpose of cleaning the same on opening the cock d, or of placing said blow pipe or pipes out of the way 'Ihe combination, with the smoke-box D and re-tubeslG, of one or more perforated steam blow-pipes, G, made adjustable up or down from the exterior of the smoke-box, and without opening the latter into or out of line with consecutive upper and lower rows ot' the tiretubes, substantially as specified.

WILHELM yS. VON ESSEN.

Witnesses:

0. DE HESSEN, TH EGGEEs. 

